I have been trying to find a good balance between small size, light weight and adequate power for a tiny whoop build for a while now.
After the X-Racer X-1 launch I was convinced that a 6mm whoop frame size (~65mm) with 7mm motor mounts is the way to go. The frame has a very nice layout and allows for a low profile whoop with a nice and light canopy (approx. 1 gram).

So, parts selection was the most important thing in order to keep the weight to the absolute minimum, without any sacrifices.
The flight controller used in the Tiny 6 and Tiny 7 micro quads by KingKong combines a VTx on the same board and makes a great combo with the tiny and reliable uSky receiver design by Simon (aka Fishpepper).
PH2.0 battery connector and batteries are a must for reliability and performance and a micro 1000TVL camera completes the build nicely – albeit not being that good in low light situations.

This combination of parts will easily get you an insanely enjoyable acro tiny whoop with plenty of power and good flight times. If you are preparing for an indoor “winter build” you should definitely consider this one. After all, it is currently my favorite whoop and I strongly recommend building one.

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The frame and motors are also available as a bundle, including props and spares:
https://goo.gl/h9JbWR (FPVmodel)
https://goo.gl/XCpymz (Ebay)
If you want a similar (but a bit heavier) build, you may also consider a BNF X-1: https://goo.gl/u1hJv4 (FPVmodel)

Silicone wire is easier to solder, more flexible and more resistant and reliable overall – plenty of colors and AWG sizes to choose from:
https://goo.gl/BTVnsC (HobbyKing)
https://goo.gl/N2KekM (Banggood)

Rubber bands for the motor wires: https://goo.gl/tWZmBi (Banggood)
You can also use dental rubber bands (used for braces): https://goo.gl/J6QNsU (Ebay)

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This video features the song “The Rover” by S Strong, available under a Creative Commons License
Song link: https://soundcloud.com/s_strong/s-strong-the-rover
Artist link: https://soundcloud.com/s_strong
CC-by license: https://creativecommons.org/licenses/by/3.0/
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